Remove unused prevCode argument for the template generator

[MrCreosote]

Also unused genRServer method

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 65.60%. Comparing base (f40270c) to head (7268322).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...us/kbase/mobu/compiler/TemplateBasedGenerator.java	66.66%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #58      +/-   ##
============================================
+ Coverage     65.57%   65.60%   +0.02%     
+ Complexity     1438     1437       -1     
============================================
  Files            77       77              
  Lines          7062     7053       -9     
  Branches       1318     1315       -3     
============================================
- Hits           4631     4627       -4     
+ Misses         1938     1935       -3     
+ Partials        493      491       -2     

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[briehl]

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